Elrog 300B vs Takatsuki 300B tubes


Has anyone heard the Elrog 300B tubes ? I read an article which mentioned that the Elrog 300B delivers 15% less power than a traditional 300B tubes. Can anyone confirm that it is audible ?

I am choosing between Elrog and Takatsuki 300B tubes. I would prefer the Elrog because it is cheaper and supposedly wonderful but if it really sounds less powerful then I have to rethink.
pani
Dracule1,
I'm glad that you are able to finally appreciate the excellence of these Elrog tubes.
Hi, Dracule1, we pm'ed about rectifier at another forum (I was not able to registered for the same user name). Anyhow, 5z4gy -> Cossor 53KU / WE422a -> WE274A/B & Takatsuki 274B. I am now using Takatsuki 274B and like it. No chance to compare it with WE's though.
As a point of information, the Big 7 is indicated at the Lampi site as being supplied with one of the following rectifiers. I've determined the filament currents listed for each tube from datasheets that can be found elsewhere on the web:

5C3S (filament current 3 amps +/- 10%)
Shuguang 274B (filament current 3 amps)
(Optional) EML 5U4G (filament current 3 amps)

Other tubes mentioned in Wyan's post just above:

5Z4 (filament current 2 amps)
Cossor 53KU (filament current apparently 2.8 to 3 amps)
WE 422a (filament current 3 amps)
WE 274A/B (filament current 2 amps)
Takatsuki 274B (filament current 2 amps)

Hope that helps. Regards,
-- Al
Charles1dad, for awhile I thought I had a bad set. I've gone direct to amp before with mixed results, but mostly positive. The Elrogs seem to be very sensitive tubes on many levels. But Elrogs in the GG DAC seem to have one of the most dramatic change in sound going direct to amp.